Improvement in bobbins for spinning-machines



G. DRA'PER.

Bobbi'ns for Spinning-Machines.

Patented Jne 23,1874

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Gear era er.

plied thereto.

"UvrEE STATES PATENT OFFICE.

GEORGE DRAPER, OF HOPEDALE, MASSACHUSETTS.

IMPROVEMENT IN BOBBINS FOR SPINNING-MACHINES.

Specification forming part of Letters Patent No. 152,219, dated .lune23, 1874; application tiled May 27, 1874.

To all whom t may concern Be it known that I, GEORGE DRAPER, ofHopedale, of the county of Torcester and State of Massachusetts, haveinvented a new 'and useful Improvement in Bobbins for Machinery forSpinning; and do hereby declare the same to be fully described in thefollowing specification, and represented in the accompanying drawings,of which- Figures 1, 2, 3, 4, and 5 are verticalsections of variouskinds of ring-frame spindles and bobbins with my invention.

The nature of said invention consists in a cored bobbin, provided with atubular iexible sleeve, connecting two or more bushings therein, andwith a space in the bod)7 and around the tubular core.

It is well-known to bobbin-makers, machinists, and spinners that solidand unehambered bobbins cannot often be made to t tapering spindles, andinterchange from one spindle to another, without bending the spindle andcausing it to run unsteadily. Consequently it is common to make bobbinswith two or more adhesive or frictional bearings to fit the spindle,chambers of larger or smaller capacity being between the bearings.While, as bobbins have heretofore been constructed, chambers between thebearings are a necessity, for the reason above stated, they areinjurious, inasmuch as they allow waste to collect in them, it beingdifficult to remove such waste, which, when not removed, produces badresults. The bearings of the bobbin, being necessarily short, are liableto wear out of shape, and also to wear the spindles smaller at thepoints of contact. I make a core consisting of bushings connected by aiiexible sleeve, the said bushings and sleeve fitting the spindle, andthe core is so formed and applied to the bobbin as to form annularchambers c. The core or inner tube of my bobbin should be so thin as notto bend the spindle when ap- The core or tube iitting continuously, oressentially so, to that part of the spindle which is or may be withinit, will not allow waste or extraneous matters to collect and accumulatewithin the bobbin; and, besides, the bearing on the spindle, being solon g,

prevents, comparatively, the bobbin from wearing the spindle, or thelatter fromvwearing the former, and thereby renders adhesion of thebobbin to the spindle, and the maintenance of the bobbin at its norm alheight thereon, surer from time to time. Furthermore, the tubular core,extending wholly or partially through the bobbin, and connectedtherewith at or near the ends of the core, with a space between the coreand shell or' bobbin body, insures to the bobbin both lightness andstrength.

In each of the drawings, A denotes the spindleLB, the bobbin; C, thecore composed of the bushings c and b, and the ilexible sleeve e; and cis the space surrounding the tube or core, and within the bobbin or itsbore.

In Fig. l the bobbin is shown as having the said bushings or connectionsat its opposite ends, with the sleeve and surrounding space extendingfrom one to the other of said bushings.

In Fig. 2 the tube C is shown as enlarged at its middle to t or about itto the bore of the bobbin.

In Fig. 3 a bobbin is shown with its upper bushing or core-head at ornear the middle of the bobbin, and with the sleeve extending Y down fromsuch bushing to a foot-bushing at the lower end of the bobbin. The spacec also extends from 011e bushing to the other. Above the upper bushingthe bobbin is chambered, as shown, or it may be solid.

Fig. 4 exhibits a bobbin provided with a bolster-receh-*ing space, d,and the core c,- and its bushings and sleeve and surrounding space c areabove said bolster-space.

Fig. 5 is a modiiieation of the said bobbin. In this ca se the upperplug or bushing is larger in diameter at its lower part, or there fitsto the bore of the bobbin shell or body, but above the fitting portionit is turned down smaller in diameter, so as to produce around it in thebobbin a cireumscrlbing space, c.

rIhe term bushings,7 as herein employed, means those portions of thecore between the flexible sleeve and the body of the bobbin. They may bemade with and as a part of the sleeve, or separately, and then he piaeedbesleeve fitting the spindle, and the bobbin and tween of attached tothe sleeve und the shell Core being constructed and arranged With ref4or body ofthe bobbin. erence to each other, leaving spaces, as set Thespindle or tha-t part of it within the forth. core is tapering, asshown. G EORGE DRAPER I claim as my invention- A bobbin, provided withzt core, consisting` Writnesses:

of two or more bushings, o b, and 2L eouneot- R. H. EDDY, ing tubulariieXible sleeve or sleeves, e, the J. R. SNOW.

